Curious about the function of this potentiometer on the Mean Well LOP-500-27 board, which operates at a fixed voltage?
Curious about the function of this potentiometer on the Mean Well LOP-500-27 board, which operates at a fixed voltage?
I am curious about what this potentiometer manages on the board. I think it might regulate the power supply fan, since when I connected a .37 amp fan, it didn't start working even though the board is supposed to handle a .5 amp fan. Anyone know if this component controls something similar?
if you're unsure, leave it as is. It's too risky to modify while the wiring is hot, especially if you're not familiar with the process.
the label next to the connector and the potentiometer usually refers to the fan speed setting.
is the voltage rating of the fans the same?
The connector next to the Potentiometer serves a specific function, but its exact purpose isn’t clear. There’s a designation for this connector, yet no corresponding information about what device connects to it. The connector type is listed as: Function Connector(CN3): TKP DH2I-2X2 or equivalent.
You are fully committed to securing that Darwin Award, aren't you? This isn't a task for an amateur—hire a pro. Or better yet, keep the Fire Department and EMS readily available.
I reached out to Mean Well USA and left a note, feeling let down since they don’t offer 24/7 technical support as a medical power supply maker. The PDFs I received didn’t match their specifications, and updates were missing.
A friend who works as a professional solder reworker advised me on my project.
I believe in Jesus, so I won’t be competing for Darwin Awards—there’s no such thing. I don’t see myself as an amateur either. This is the second time you’ve called me an idiot, and it’s not something I take kindly to.
Have your parents ever told you that if you don’t have anything nice to say, maybe you shouldn’t speak at all?
I’m a 35-year-old U.S. veteran, and handling power supplies is one of the safer activities I’ve tried. It’s essentially harmless in my view. I don’t need fire services or EMS.
I’m not trying to get high or mighty, but you disrespected me twice.
I just need straightforward answers about power supplies on a computer hardware website.
I am a U.S. Navy veteran specializing in submarines with far more experience than anyone here on Earth. I’ve seen some tough situations, like watching a colleague die from an electrical accident while I was holding his safety rope. I don’t take electrical safety seriously—neither should you. Both of you have shown a lack of knowledge in this area, which means you’re not qualified to do what you’re trying to do.
I spoke to a representative at Mean Well and learned that trimmer adjusts the voltage of the power supply, not the fan. That means I won’t need to interfere since the voltage is already sufficient. The fan only activates when there’s a 20% load on the power supply, which gives it about 0.2 amps without load—this is problematic because now I have to purchase a weaker fan to ensure it runs continuously. If you attempt to use another fan besides the one designed for your power supply, you must keep the fan usage under 0.2 amps; otherwise, it will only reach 0.5 amps when the power supply has load. It’s challenging to find a fan specifically made for your power supply in the United States.